Control apparatus for a bobbin winding machine



W 195$ F. GROSSE-BORGER 298329147 CONTROL APPARATUS FOR A BOBBIN WINDING MACHINE Filed, Jam. 18, 1956 4 Sheets-Sheet 1 I INVENTOR. ,FRANK Gfiasss- 50mm ATTURNEY Apzrifl 2Q, 1953 ggoggg-gcmggga 2,32J4? CONTROL APPARATUS FOR A BOBBIN WINDING MACHINE Filed Jan, 18, 1.956 4 Sheets-Sheet 22 INVENTOR.

FRH K G nosjafimem MN W ATTORNEY CONTROL APPARATUS FOR A BOBBIN WINDING MACHINE Filed Jan. 185,, 1.956

4 Sheets-Sheet 3 ZNVENTOR.

ATTORNEY W 395% F. GROSSE BQRGER y 'fl CONTROL APPARATUS FOR A BOBBIN WINDING MACHINE Filed Jan. 18, 1956 4 Sheets-Sheet 4 .1.1 m 4/: V r 9 Z WA ,4

A TTUENEY United States Patent Q CONTROL APPARATUS FOR A BOBBIN WINDING MACHINE Frank Grosse-Borger, Fort Lee, N,.J.. Application January 18,}956, No. 559,977 11 Claims. (Cl. 33-132) My invention relates generally to a control apparatus for bobbin winding machines and specifically to control apparatus for such bobbin winding machines in which the control of the winding operation is based upon the overall length of the thread wound upon a bobbin.

It is among the objects of my invention to provide a control apparatus for a bobbin winding machine which will produce bobbins all of which have precisely the same amount of thread.

It is a further object of my invention to provide a control apparatus for a bobbin winding machine in which the bobbin winding machine is activated and deactivated periodically in correspondence'with the length of the thread wound on a bobbin.

It is a further object of my invention to provide bobbins having uniform amounts of thread thereon, thereby materially to reduce the need for haphazard renewal of bobbins in apparatus utilizing bobbins, such haphazard renewals being necessitated by the random lengths of thread included in such bobbins.

It is a further object of my invention to provide bobbins.

from a bobbin winding machine which have uniform lengths of thread.

It is yet a further object of my invention to provide a control apparatus for a bobbin winding machine which will enable the winding of bobbins having different lengths of thread as a matter of choice.

It is a further object of my invention to supply a controlling apparatus for a standard bobbin winding machine that may be added thereto without modification of the basic machine.

These objects and advantages, as well as other objects and advantages, may be achieved by the device illustrated in the drawings in which:

Figure 1 is a side elevational view of my control apparatus for a bobbin winding machine;

Figure 2 is a top plan view thereof;

Figure 3 is a top view thereof with the table removed;

Figure 4 is a partial top plan View showing the detent in release position;

Figure 5 is a partial top plan view showing the detent in another position;

Figure 6 is a partial side elevational view;

Figure 7 is a vertical sectional view as indicated by line 77 in Figure 2;

Figure 8 is a rear elevational view of the lower portion of my control apparatus;

Figure 9 is a front elevational view of Figure 8;

Figure 10 is a front elevational view of Figure 8 with the control arm lowered; and

Figure 11 is a circuit diagram.

The present invention is limited to the controlling apparatus and the controlled apparatus is conventional. There are in existence numerous bobbin winding machines and particularly one known as the Casati. The present invention is a'control apparatus intended to be attached to that machine as a controlling member. In the standard Casati machine, bobbins are wound to a certain circumference and when they reach that circumference, regardless of the amount of thread included in the bobbin, the winding operation ceases and a new 2,832,147 Patented Apr. 29, 1958 ice ' involved, the amount of thread on the bobbins will be exhausted at highly variant times, necessitating stopping the machine to replace the bobbins at frequent intervals. If the bobbins utilized were all of uniform yardage, they would all be exhausted simultaneously and could all be replaced simultaneously. Bobbins having the exact same overall diameter may vary widely as to the length of thread included by reason'of differential tensions of winding, differential thicknesses of thread, differential conditions of humidity, different speeds of winding, and

the flexibility of the arbor upon which the bobbin is wound.

The present invention intends to substitute for the control mechanism on the bobbin winding machine a different type of control mechanism. The standard control mechanism stops the winding operation when the diameter of the bobbin reaches a certain pro-determined dimension. The present control mechanism stops the bobbin winding operation when a pre-deterinin'ed amount of thread is wound into the bobbin, regardless of the actual overall diameter of the bobbin. This result is achieved by wrapping the thread to be wo tnd around a measuring wheel which revolves a pro-determined number of times actuating a gear and a plurality of switches, which in turn interrupt the winding operation.

By the substitution of my control apparatus for the inactivated standard control apparatus, it ispossible to produce bobbins which have uniform *lengths of thread wound therein. This is accomplished by'the standard machine which need not be discarded'and can be easily modified to accommodate my control apparatus.

Referring now to the drawings in detail, my control apparatus for a bobbin winding machine provides a measuring wheel 11 mounted on a shaft 12 which enters a housing 13. This shaft is provided with a worm section 14 which engages a worm gear 15. The worm gear is mounted on a shaft. 16 which is carried by a bracket 17. The bracket 17 is mounted on the bottom of a plate 18 which serves to enclose the housing. Underneath the gear is a small gear 19which engages a large gear 20 mounted on a shaft 21. Above the plate, a gear 22 is mounted on the shaft. An arm 23 is pivotally mounted on the shaft bearing 24. This arm'23 carries a shaft 25, which in turn carries an idler 26. This idler 26 is in engagement with another gear 27. The gear 27 is mounted on a bushing 28 which is carried by a shaft 29. At the bottom of the bushing 28, a gear 30 engages a gear 31 which is attached to an eccentn'cally mounted collar 32. A cam 33 in the form of an arm having a central aperture embraces the eccentric collar 32 and moves backward and forward in accordance with its eccentric movements, and in response thereto. The arm 33 is pivotally secured to a spring holder 34 which is likewise mounted pivotally on the plate. The spring holder 34 has a resilient spring 35 or finger secured thereto and extending beyond the end. With each revolution of the gear 31, the spring 35 engages a pressure plate 36 which is normally disposed in disengaged relation to the actuating pin of a double throw, single pole, microswitch. The rotation of the bushing 28 also causes the rotation of a rotary cam 37. A pivotally mounted detent 38 has one end 39 bearing on this cam and responsive to it in its movements. This end drops 'off the cam surface into a cut-out segment 40 and then rides up onto the normal surface 41 of the cam. A spring 42 carried by the shaft on which the detentis pivotally mounted normally urges the end 39 of the detent into engagement with the cam 37. The opposite end 43 of the detent-38 engages the pressure plate and prevents it from contacting the control pin 44 on the microswitch. The ratio of the large gear 31 to the small gear 30 is two to one so that on the first revolution of the rotary cam 37, the spring 35 bears on the pressure plate 36 and urges it toward the contact pin 44 of the microswitch. The detent 38 holds the pressure plate 36 and prevents it from obeying the urging of the spring until the end 39 drops into the cut-out sector 40 at which time the pressure plate 36 is released by the detent-38 and urged by the spring 35, engages the contact pin 44 of the microswitch, opens thefirst (normal) circuit (Figure 11) and closes the second circuit. Further revolution of the assembly disengages the spring 35 from the pressure plate by reason of the cam arm 33 moving with the eccentric collar 32. The end 39 of the detent, however, is now riding the high point 41 of the cam and the detent 38 holds the pressure plate 36 in engagement with the pressure pin 44 until such time as the end 39 drops oti the cam 37 and the end of the detent 43 releases the pressure plate 36. Since the spring 35 is no longer in engagement with the pressure plate 36, the spring pressed pin 44 of the microswitch moves the pressure plate 36 to the opposite side of the end of the detent 43, thereby opening the second circuit and closing the first normal (Figure 11) circuit by reason of the release of the pressure pin 44. Since the microswitch is a double throw, single pole switch, a second circuit is closed as the first circuit is opened. The end 39 of the detent now rides up on the high point 41 of the rotary cam 37 and the detent 38 moves into restraining relationship with the pressure -plate 36. "Further rotation of the large gear 31 brings the spring 35 into engagement with the pressure plate 36 by reason of the cam' arm 33 reacting to the movement of the eccentric collar 32. Pressure continues to be exerted until the end 39 of the detent once more drops ofiE the high surface 41 of the rotary cam 37 into the cut-out sector 40. This permits the detent 38 to release the pressure plate 36. The pressure plate once more responds to the spring 35 and exerts pressure on the contact pin 44, whereby the primary circuit is opened and the secondary circuit is closed. The shaft 21 is capped by a knurled nut so that gear 22 may be substituted for by a gear of ditfering ratio and the idler 26 will still provide connection to gear 27.

The bobbin winding machine has an arm 45 normally 2 disposed in the position shown in Figure 9. When the arm is disposed in this position, the bobbin winding shaft 46 is revolving and a thread 70 is wrapping around the same into the form of a bobbin. When a certain amount of thread has passed over and rotated the measuring wheel 11, the various aforementioned mechanisms close an open circuit from the microswitch 47 which efiects the release of the arm through the action of a solenoid 48. The arm is connected with the controlled apparatus which is no part of this invention. The controlled apparatus stops the winding spindle and ejects the bobbin. When the arm is returned to latched position by controlled apparatus, the bobbin winding operation recommences.

Before the solenoid operates, the control arm 45 is disposed in the position shown in Figure 9. It is so held by the latch 50 which is held and engaged by the bar 51. When the arm is restored to normal position by the controlled apparatus, the winding operation is resumed. At

the. top of the bar 51, a link 52 is pivotally mounted and is connected to another link 53, which is pivotally connected to a support 49. This support is connected to the solenoid 48. The operation of the solenoid 48 jackknifes (as shown in Figure the links 52, 53 which normally lie extended below their center line by virtue of the pin 54 testing on the top of the support 49 (as shown in Figure 9). When the links 52, 53 iackknife, the bar 51 is free to move to the right as shown in Figure 10. It no longer restrains the latch 50 and permits the control arm 45 to drop to the position shown inFigure 10.

The mechanism of the controlled machine takes over at this point, stops the spindle 46, ejects the bobbin which has been wound, and restores the control arm to the position shown in Figure 9. The latch again holds the arm 45. The controlled machine mechanism at this point would continue the movement and activity of the control arm 45, and were it not for the fact that the bar 51 is once more locked in position shown in Figure 9, the arm 45, so released would again immediately drop. But the bar 51 is held in position .shown in Figure 9, and so the control arm 45 remains as indicated. The controlled apparatus, at this point, starts the spindle 46 to revolve again and a new bobbin is wound.

Referring again to the control mechanism, the bar 51 is restored to positionby the spring 55. When the solenoid operates, it pulls the support 49 above the centers of the two links 52,53, raises .thmpin 54 thereby permitting the bar 51 to pivot under urging of the latch 50. The solenoid 48 is energized by the closing of one circuit (see Figure 11) by the microswitch in the upper control mechanism. After the solenoid 48 is energized, the circuit is broken by another. microswitch, activated as follows: f

A dog 56 is attached to the upright bar 51. This dog 56 engages a ratchet wheel 57. Mounted on the same shaft with the ratchet wheel is aq'im585having alternate high and low portions. rider 59.traverses this cam and is mounted on an 60 'whichengages the pressure pin 61 of a second niic'roswitch62." ,Each movement'of the bar 51 moves tlieride'r 's'armma highp int to a low point on the cam; low'point .to a high point on the cam 58. .,;Bypre ssure pin 61 on the double throw, ,s ing'lepole' microswitch'62, the

arm opens one circuitand-cl6es; the' timenisee circuit diagram Figure 11.) .whenllthe'ca mirider rides up on the high point of the arm engagec the pressure pin of the microswitch and opens onecircuit and closes the other. .Thus, thefunction o f the upper microswitch is to successively energize. one or. theother of the. alternate solenoid circuits, thereby releasing the control arm, and the function of the lower microswitch is to de-energize or break the solenoidcircuit and set' up a second circuit whereby the solenoid may be once more energized. Each energization of the solenoid circuit causes a release of the control arm, whereby the wrappingof a bobbin is stopped by the controlled apparatus and the bobbin is removed and the wrapping of the next bobbin is commenced. The successive functionings of the primary microswitch are brought about by the amount of thread passing over the measuring wheel. Thus, a predetermined amount of thread .passing over the measuring wheel causes repeated stopping of the winding operation long enough for the bobbin to be removed by the controlled machine to which the present control is attached as an adjunct.

The successive stopping and starting of the winding operation would undoubtedly result in the breakage of thread were it not for the fact that the thread 70, after it leaves the spool 63, passes over tension wheels 71, 72 around the measuring wheel 11 and over the tension guide 64. The tension guide is mounted on a pivotally mounted guide carrier 65. A spring 66 normally maintains this guide carrier in the position shown in Figure 1 when the tension guide is not under tension and the thread is not being wrapped. At such time, the brake 67 has its end 68 engaged with the measuring wheel 11. When, however, the thread 70 is being wound on the spindle 46, the tension of the thread overcomes the spring 66 and the carrier pivots slightly downward. The tension guide also moves-slightly downward. This disengages the brake head 68 from the measuring wheel 11 and permits the wheel to spin freely until the winding operation ceases, at which time the relaxation of tension on the thread 47 tension guide 64 to rise, the

I? is arm '55 likewise to rise, thereby once more pressing the brake head against the measuring wheel Ill and stopping the free spinning of that wheel which would continue by reason of its momentum.

The present control apparatus is an auxiliary apparatus for the control of the well-known Casati bobbin winding machine. The machine in its unmodified form stops the winding of a bobbin when the overall diameter of the bobbin reaches a certain set dimension. By inactivating the controls which stop the winding phase in accordance with the dimension of the bobbin and substituting the present invention, a control which stops the winding phase, out by reason of the bobbin achieving a certain dimension, but by reason of a predetermined amount of thread having traversed and turned the measuring wheel is utilized, whereby bobbins of great uniformity of content are achieved.

The foregoing description is merely intended to illustrate an embodiment of the invention. The component parts have been shown and described. They each may have substitutes which may perform a substantia y similar function; such substitutes may be known as pr 1" substitutes for the said components and may have actually been known or invented before the present invention;

these substitutes are contemplated as being within the scope of the appended claims, although they are not specifically catalogued herein.

1 claim:

l. A control apparatus for a bobbin winding machine with a reciprocating arm comprising a measuring wheel, a first switch means operatively connected to the measuring wheel, a solenoid controlled by the first switch means, a latch for the reciprocating operated by the solenoid, a second switch means operatively connected to latch and in series with the first switch means.

2. A control apparatus for a bobbin winding machine with a reciprocating arm comprising a measuring wheel, a double throw single pole switch operatively connected to the measuring wheel, a solenoid controlled by the first switch, a latch for the reciprocating arm operated by the solenoid, a second double throw single pole switch controlled by the latch, the first and second switches connected in two circuits to the solenoid and the second switch connected to open the circuit closed by the first switch.

3. A control apparatus for a bobbin winding machine with a reciprocating arm, comprising a measuring wheel, a double throw single pole switch operatively connected to the measuring wheel, a solenoid, a latch for the reciprocating arm, a second double throw single pole switch operated by the latch, the first and second switches connected in two circuits to the solenoid, the first switch selecting the circuit to the solenoid, the second normally breaking the selected circuit as soon as it is completed and making the other circuit.

4. A control apparatus for a bobbin winding machine with a reciprocating arm, comprising a measuring wheel, a double throw single pole switch operatively connected to the measuring wheel, a solenoid, a latch for the reciprocating arm, a second double throw single pole switch operated by the latch, the first and second switches connected in two circuits to the solenoid, the one circuit being normally closed at the first switch and open at the second switch and the other circuit being normally open at the first switch and closed at the second switch.

5'. A control apparatus for a bobbin winding machine with a reciprocating arm comprising a measuring wheel, a double throw single pole switch operatively connected to the measuring wheel, a solenoid, a latch for the reciproeating arm, a second double throw single pole switch operated by the latch, the first and second switches connected in two circuits to the solenoid, the one circuit being normally closed at the first switch and open at the second switch and the other circuit being normally open ii at the first switch and closed at the second switch, said measuring wheel operating the first switch to select the circuit closed on the second switch and thereby toop erate the solenoid, said solenoid operating to release the latch and operate the second switch to open the selected circuit and make the other circuit.

6. A method of controlling a bobbin winding machine having a reciprocating control arm comprising revolving a measuring wheel by a thread to be wound into a bobbin, establishing an open first electrical circuit to a solenoid, making the first electrical circuit in response to a predetermined number of turns of the measuring wheel, actuating through the first electrical circuit a solenoid to disengage a latch from a control arm, breaking the first electrical circuit, re-engaging the latch with the control arm,

establishing an open second electrical circuit to the solenoid, making the second electrical circuit. in response to a predetermined number of turns of the measuring wheel, and repeating the make and break cycle.

7. A control apparatus for a bobbin Winding machine comprising a device in accordance with claim 1, a springpressed brake normally engaged with the measuring wheel, a pivotal mounting for the brake, a tension arm attached to the brake, said tension arm pivotally responl sive to a thread engaged with it and pivotal to disengage the brake from the measuring wheel when the thread is under tension.

8. A control apparatus for a bobbin winding machine comprising a device in accordance with claim 1, in which said first switch means normally closes a first circuit, a pressure plate, a means for holding the pressure plate disengaged from the first switch, a resilient finger adapted to exert pressure on the plate, a detent for holding the pressure plate in engagement with the first switch, for operating the detent in response to the measuring wheel.

9. A control apparatus for a bobbin winding machine comprising a device in accordance with claim 1 in which said second switch means normally closes a second circuit and opens a first circuit when the first circuit is closed by the first switch, a pressure plate, a means for holding and releasing the pressure plate engaged with the second switch, said means operably connected to the latch.

10. A control apparatus for a bobbin winding machine comprising controlling apparatus and controlled apparatus, in which a reciprocating arm stops and starts a bobbin winding operation, said controlling apparatus comprising a measuring wheel, a first single-pole double throw switch, means cooperative with the measuring wheel for actuating the first switch, a latch for the reciprocating arm, a solenoid operably connected to the latch, said latch in detaining engagement with the arm, said latch releasable by the solenoid, a second single-pole double throw switch, means cooperative with the latch for actuating the second switch, said first and second switches connected in two series circuits with one switch in each circuit normally open when the other switch is normally closed.

11. A control apparatus for a bobbin winding machine in accordance with claim 1 in which the means cooperative with the measuring wheel comprises a finger engageable and disengageable with a pressure plate which is normally disengaged from the first switch, a detent normally restraining movement of the pressure plate toward the first switch, said detent movable to release the pressure plate when the finger urges the pressure plate into engagement with the first switch and engageable with the pressure plate to maintain its engagement with the first switch when the finger is disengaged.

Johnson July 26, 1932 Hempel -c Dec. 20, 1955 

